Fletching jig



Oct. 29, 1963 MARTIN 3,108,792

FLETCHING JIG Original Filed April 30, 1959 FIG. l.

INVENTOR.

MARTIN United States Patent Ofiice 3,108,792 Patented Oct. 29, 19633,108,792 FLETCHING JIG Royce H. Martin, 13.0. Box 205, Uinatilla, Greg.Original application Apr. 30, 1959, Ser. No. 809,991, new Patent No.3,015,483, dated Jan. 2, 1962. Divided and this application Oct. 12,1961, Ser. No. 144,694 1 (ilaini. (Cl. 26938) This invention is adivision of my co-pending application Serial No. 809,991, filed April30, 1959, now Pat. No. 3,015,483 dated January 2, 1962.

One of the objects of the invention is toprovide a durable arrowpositioning assembly including features which render the positive andaccurate setting of the arrow shaft in the jig at the desired angularpositions for placing the feathers thereon. In that connection it isproposed to provide novel indexing means all of whose parts are centeredabout the same axis and maintained in that relation without anysubstantial effect thereon by use, wear or accidental pressures on themanipulating handle, and which are also held at a selected setting bypractical and reliable means.

With the above and other objects in view which will appear as the natureof the invention is better understood, the invention consists in thenovel construction, combination, and arrangement of parts, hereinaftermore fully described, illustrated and claimed.

In the accompanying drawings:

FIGURE 1 is a side elevation of a jig illustrating the presentimprovements.

FIGURE 2 is an end elevation of the improved indexing means taken online 2 of PEG. 1.

FIGURE 3 is a vertical sectional view taken on the line 3-3 of FIGURE 2.

Similar reference characters designate corresponding parts in theseveral figures of the drawings.

Referring first to FIG. 1, it will be seen that the jig includes a baseA, a first upwardly directed end wall 1 and a second upwardly directedend wall 2. The first end wall 1 is provided at its upper end with anotch or the like for receiving and supporting one end of the arrowshaft designated generally as B.

The second or lefthand end wall 2 (as viewed in the drawings) isprovided with the improved arrow positioning assembly designatedgenerally as C.

Referring to the assembly C of FIGS. 2 and 3, it will be understood thatthe offset portion 3 of the wall 2 is provided on its inner face 4 withan annular degree scale S which is identical to the scale S of FIG. 2and whose axis coincides with an opening 5 which receives a shaft 6. Theouter face 7 of the wall 3 is provided with a plurality of series ofannular concentric keeper depressions 8 whose axes are radially alignedwith a related degree mark on the scale Whose position is shown by dotand dash lines in FIG. 2 on the inner wall 4. These radial depressionsmay be arranged in appropriate groups as seen in PEG. 2, the depressionsof each group being related to corresponding degree marks on the scaleS, FIG. 2. For example, the depressions may begin at 0 and extend to anydesired additional degree marks thereafter.

The shaft 6 has a nock receiving socket 14 at one end and a recess 12 atthe other and is further provided with a transverse slot 9 whichadjustably receives arm 10 having a groove 11 on its inner face intowhich the inner end of screw 16 fits to limit sliding movement of thearm and also to prevent said arm 10 from moving out of predeterminedselected position, thereby assuring that ball 13 will be kept in truealignment so that the clamp D will place the feather, or the like, in anaccurate and desirable selected place along the horizontal axis of thearrow shaft B, while the opposite face of arm 11 is set and held snug-1y at the desired radius by the set screw 12. The head of the set screwis readily accessible through the open end of the recess 12 to tightenand loosen the arm 10 so that it may slide to enable the user to adjustthe arm diametrically so that the outer end portion of the selector arm10 carrying spring pressed ball 13 may fit into selected depressions 8and thus hold the shaft 6 at the desired angular setting.

The inner end of the shaft 6 is formed, as previously indicated, with asocket 14 for concealing a nock-receiving clamp 15. This clamp is ofsubstantially U-shaped formation, and its resilient arms are bentinwardly to frictionally engage the arrow shaft. The bottom of the nockclamp may be secured in the shaft independently of the cross pin 16 by ascrew 16 whose inner end may extend into the groove 11 at the inside ofthe arm 10 to prevent sidewise movement.

The outer peripheral portion of the shaft 6 at the inner or scale faceof the wall 3 has fixed thereto a hub having a pointer 17 held onto theshaft by cross pin 16. The hub and pointer 17 are movable over the face4 and the scale indicated by dotted line S, FIG. 3, and identical to dotand dash lines S, FIG. 2, as shown in my Patent 3,015,483 to enable theoperator of the jig to select, visually, the proper degree marks on thescale.

After the nock of the arrow is fitted in the clamp 15, the handleportion 6 of the shaft may be rotated through the desired angulardistance for feather setting, according to the marks selected on thescale S. As the shaft turns, the ball 13 will be depressed sufficientlyto be forced out of the depression in which it has been resting, and theshaft may be rotated until the ball strikes the next depressioncorresponding to the selected scale.

In connection with the depressions 8, it will be understood that if thepointer 17 is at zero and it is desired to set the feathers at an angleof it is only necessary to turn the handle portion of the shaft 6 untilthe ball 13 will come to rest at the 120 marking and subsequently at the240 marking. By changing the position of the arm 10 in the guideway 9 ofthe shaft, the spring-pressed ball 13 will describe another annular pathwhich includes a second set of depressions which will stop the shaftevery 45 on the scale. As the arm 10 is moved to cause the ball to comecloser to the axis of the shaft, it will be understood that the shaft isstopped at points on the scale of different angular distances from thosedescribed.

I claim:

In a fletching jig, an arrow positioning assembly comprising, incombination,

an arrow supporting frame (A-j-l +2) including a nock supporting wall 3having an opening 5,

a series of degree marks arranged radially to said opening on the outerface '7 of said wall 3,

a series of annularly disposed depressions 8 related to each of saiddegree marks, each series having a radius of different length also fromthe axis of said opening a shaft 6 journalled in said opening 5 andhaving a nock receiving socket 14 at its inner end and a recess 12a atits outer manipulating end, said shaft also having a radial slot 9disposed at one side of the outer face 7 of the wall 3,

an arm 10 slidable in said radial slot 9 and having a spring pressedball 13 at one end and also having a longitudinally disposed guide 11 onits face, and overlying the outer face 7 of said wall 3,

a screw 12 passing through the bottom of the nock receiving socket andhaving its inner end projecting into said groove 11 to guide the slidingmovement of the arm 10 radial to the shaft 6,

. 3 4 and a set screw 12 in said recess 12a of the shaft and ReferencesCited in the fiie of this patent having its inner end positioned forabutting engage- UNITED STATES PATENTS ment with the arm 10 to set thelatter in a given 1 108 736 Frykman g 25 1914 POS1'E1OI1 m the slot 9and the ball 13' 111 selected Scott Nov. 3, 1936 depression 5 2,897,860Martin Aug. 4, 1959

